Used primarily as a reagent in organic synthesis, this compound is valuable for introducing formyl groups into various substrates, enabling the production of aldehydes. It is particularly effective in the Vilsmeier-Haack reaction, where it facilitates the formylation of aromatic compounds, leading to the synthesis of intermediates for dyes, pharmaceuticals, and agrochemicals. Its application extends to the preparation of complex organic molecules, making it a key component in the development of active pharmaceutical ingredients and specialty chemicals. Additionally, it is employed in the modification of polymers and the creation of advanced materials with specific functional properties.